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QUARTZ WARE

Borosil Fused Silica 99.95% SiO2 surpasses all of the desirable chemical and weathering durability properties usually associated with opaque Silica ware. We manufacture as per IS and BS Stand-ards.

a) There is little or no visible surface change or damage to silica with prolonged exposure to water, atmospheric gases, contaminants, oxide of nitrogen and ozone.

b) Attack does occur, on exposure to alkaline solution and acids at very high temperatures.

c) Low expansion and hence excellent dimensional stability and thermal shock resistance.

Resistant to chemical attack. Virtually unaffected by sulphuric, nitric and hydrochloric acids. Hot alkalies and certain metal oxides react on silica. It is attacked by hydrofluoric acid. At high temperatures, it is also attacked by phosphoric acid. Continuous use of fused silica above 10000C leads to devitrification with formation of crystobalite which is a crystalline phase and will lead to breakage on repeated use. For accurate and long use, it is advisable to wash the articles in distilled water and alcohol to remove trace impurities. Heating fused quartz to elevated temperatures causes Si02 to undergo dissociation. Consequently, when flame-working fused quartz, there is a brand of haze or smoke which forms just outside the intensely heated region. This haze presumably forms because the Si02 recombines with oxygen from the air (and perhaps water) and condenses as extremely small particles of amorphous Si02.

1002-Beakers

Low Form, With Spout, Borosil
Product Code Capacity ml Approx O.D. x Height mm Quantity Per Case
1002009 25 35 x 45 5
1002012 50 40 x 58 5
1002016 100 50 x 75 5
1002018 150 55 x 88 5
1002021 250 70 x 95 1
1002024 500 85 x 115 1
1002029 1000 105 x 145 1

3175-Muffle

Trays, Borosil
Product Code Type Nominal Length mm Quantity Per Case
3175041 2 Holes 39 1
3175042 4 Holes 76 1

3185-Dishes / Basins

Round with Spout, Borosil
Product Code Approx O.D. x Height mm Nominal Capacity ml Quantity Per Case
3185008 55 x 23 20 10
3185042 75 x 27 45 5
3185044 85 x 35 70 5
3185045 95 x 36 85 1
3185016 100 x 38 100 1
3185046 115 x 47 200 1

3186-Combustion

Boats with Handle, Borosil
Product Code Approx O.D. x Height mm Quantity Per Case
3186Q01 12 x 77 1
Prices for other sizes on request

3190-Crucibles

Without Lid, Borosil
Product Code Capacity ml Approx O.D. x Height mm Quantity Per Case
3190007 15 40 x 26 10
3190009 25 47 x 30 10
3190012 50 57 x 35 10
3190015 80 69 x 45 10
3190018 150 80 x 54 5

3191-Lids

For Crucibles, Borosil
Product Code Capacity ml Quantity Per Case
3191007 15 10
3191009 25 10
3191012 50 10
3191015 80 10

Volatile Matter

Volatile Matter Crucibles, Borosil
Product Code Catalogue No. Item mm Dimension Per Case Quantity
3195041 3195 Crucible 25 x 38 5
3196041 3196 Plunger 12.5 5
3197041 3197 Lid 5

3198-Silica

Triangles on Nichrome (Translucent), Borosil
Product Code Capacity ml Quantity Per Case
3198007 15 10
3198009 25 10
3198012 50 10
3198015 80 5

5435-Flask

Kjeldahl Round Bottom, Quartz, Borosil
Product Code Capacity ml Ground Joint Quantity Per Case
5435024 500 24 / 29 1

5644-Flasks

Volumetric, Borosil
Product Code Capacity ml Quantity Per Case
5644005 5 1
5644006 10 1
5644009 25 1
5644012 50 1
5644016 100 1
5644021 250 1
5644024 500 1
5644029 1000 1

8500-Leco Tubes

Leco Tubes, Borosil
Product Code Type
8500Q02 CS244